Abstract: In order to adapt to the requirements of Xiang-steel development strategic, reducing production costs, raw material contain iron for sintering was merged with some additional low-quality iron ore with low-grade, high aluminum and silicon content. In order to find a reasonable technology of mine merge, reducing disadvantage causing by sintering process and blast furnace smelting process, CaO, MgO, Al2O3, SiO2 content on various indicators during sintering was studied through sintering test by using on-site sintering raw material from Xiang-steel, which provide technical basis for reasonable mine merge of low-quality iron ore from Xiang-steel.

Key words: Iron ore sintering, Alkalinity, Yield of finished, Twmbler strergth